You may remember that I've written about telomeres quite a bit in the past. Telomeres form the "tail" of your chromosomes. They act a little bit like the cap on your shoelace, keeping your DNA from unraveling. Every time your cells divide, your telomeres get just a little bit shorter.

I really like vitamin K. I think it helps protect the heart, and it's found in a number of foods that are really good for you. Now I've discovered research that gives me yet another reason to recommend vitamin K.

Anything we can do to protect our brains from dementia is welcome. On Friday, I showed you how a simple habit can cause serious memory problems.